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Finding the Fourth Proportional to 5,911.17, 8,866.89 and 1,961.16

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Solution

The fourth proportional to 5,911.17, 8,866.89 and 1,961.16 is: 2,941.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,911.17 : 8,866.89 = 1,961.16 : x
  2. Step 2: Convert to fraction form
    5,911.17/8,866.89 = 1,961.16/x
  3. Step 3: Cross multiply
    5,911.17x = 8,866.89 × 1,961.16
  4. Step 4: Simplify right side
    5,911.17x = 17,389,389.99
  5. Step 5: Solve for x
    x = 17,389,389.99/5,911.17
  6. Step 6: Final answer
    x = 2,941.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.